Planooraph co



N. A. AND C. S. LICHTY AND H. F. CAMPBELL.

VENTILATOR.

APPLICATION FILED JULY 15.1918.

Patented July 8, 1919.

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N. A. AND 0. s. LICHTY AND H. F. CAMPBELL.

VENTILATOR.

APPLICATION FILED JULY 15.!9i8- Patented July 8, 1919.

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UNITED STATES PATENT OFFICE.

NORMAN A. LICI-ITY, CLAUD s. LIGHTY, m HENRY n. CAMPBELL, on'wnrnnnoo,

IOWA, .ASSIGNOBS 'ro LIGHTY- METAL rnonuc'rs COMPANY, or WATERLOO,

' IOWA, A conronn'rron OFIIOWA- vnnrrrnn'ron. 'i f Specification of LettersIatent.

' Patented July8, 1919.

Application filed July 15 1918. Serial no. 244,858.

To all whom it may concern:

Be it known that we, NORMAN A. LIOHTY, CLAUD S. LICHTY, and HENRY F. CAMPBELL, citizens of the United States, residing at Waterloo, in the county of Blackhawk and State of Iowa, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

Our invention relates to improvements in ventilators, and particularly to ventilating devices applied for structures for housing" stock, particularly hogs, and the object of our improvements is to supply a wind-directed cowl for a ventilating-flue, balanced, and mounted rotatably on anti-friction means to easily and quickly respond to air movements of small magnitude, directed so that an eflicient suction is set up thereby in the ventilating-flue for thoroughly ventilating and aerating the building.

This object we have accomplished by the means which are hereinafter described and claimed, and which are illustrated in the accompanying drawings, in which Figures 1 and 2 are respectively elevations of our ventilator, taken from points looking toward the funnel thereof, and from a pointlooking at the opposite side of the ventilator;

.Fig. 3 is an elevation of the ventilator taken from a position at an angle of ninety degrees from said Fig. 1; Fi 4 is an elevation of said ventilator simi ar to said Fig. 1, but with parts removed or broken away to disclose the interior mounting of the cowl on the ventilating-flue; Fig. 5 is a plan view of the ventilating-flue showing the cowl in horizontal section, and Fig. 6 is an enlarged detail view of the cowl-spindle and the anti-friction bearing parts therefor, parts being shown in central vertical sections.

In the drawings, similar numerals of reference denote corresponding parts throughout the several views.

Our improved ventilator has the hollow rectangular ventilating-flue basal part 1 terminating upwardly in a conical part 2 and a cylindrical part 3, the latter being outwardly reinforced by a flat ring 1. The basal part 1 may have two opposite sides cut away angularly at 13 to be conformed to the pitch of a roof on which it is mounted over a flue or roof opening.

The cowl is of the elbow-shaped type,

having a semi-cylindric wall 6 whose sides extend. out straight in parallelism to form a funnel directed laterally terminating with flaring-edges 8.

A counter-weight 7 is fixed on the back of the wall, 6 to balance the cowl. The top of the cowl is formed of a single plate 9, which 'is planar in type and curved upwardly to the upper edge of the funnel, a

median vane 10 being mounted longitudinally "upon the top of the cowl and braced by oppositely-extending rods 11.

A wire netting 12 is positioned across the mouth of the funnel of said cowl, to keep out birds.

The cowl wall 6 is mounted upon a horizontal plate 29, having a circular opening 30 about the neck-piece 3 of the ventilatingflue. and connected to said plate by a ring 5.

The cowl is mounted rotatably upon the ventilating-flue as follows: The numeral 1 1 denotes a cross-bar crossing the neck 3 diametrically and having its ends turned up and secured to the inner wall of said neck,

and said bar is medially orificed.

The numeral 15 denotes a step-bearing whose lower end is diminished and seated in said orifice, and this bearing contains an anti-friction ball 24:. The exterior periphery ofthe bearing is threaded and seated in the lower end of a vertical cylinder 16. A sleeve-bearing 17 isin threaded junction with the upper end of the cylinder 16, and its upper exteriorly threaded end is passed through bars 18 and a sleeve-ring 19 connected to said-bars by bolts 27 and nuts 28. Cross-bars 20 extend across the cowl with their endssecured to the inner wall thereof, and are orificed at their crossing to receive a spindle 21 fixedly pendent from the top 9- cross-pin 25 serving to prevent its egress upwardly, by 1mpinging on the lower end of the sleeve 17 The lower end of the 'spindle rests upon the ball 24. Within said sleeve 17, the middle part of said spindle is diminished at 26 to diminish frictional contact with the inner wall of the sleeve.

It will be seen that the entire weight of the cowl is thus poised on the anti-friction ball-24, and that a very slight impulsion will rotate the cowl to its position in line with the impelling air-current.

The curvilinear planar. top of the cowl also permits the air-current to pass smoothly and evenly over it to exercise equal action on the vane 10, and thus a vacuum is engendered before the funnel of the cowl, which draws up air through the ventilating-flue, to properly ventilate and aerate the building below.

Having described our invention, What We claim as new, and desire to secure by Letters Patent, is I l. A ventilator, comprising a ventilatingflue, and an elbow-shaped cowl rotatably mounted thereon, the top of the cowl being planar and sloped curvilinearly upwardly toward the upper edge of the funnel of the cow. 7 r

2. A ventilator, comprisin a ventilating flue, an elbow-shapedcowl' aving' a vane thereon, a step-bearing mounted fixedly cen- 'trally within said flue, an anti-friction ball positioned in the step bearing, a sleeve-bearing'surmounting and in communication with I tures.

NORMAN A. LIGHTY. Y OLAUD S. LIGHTY. HENRY F, CAMPBELL.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Batnts. Washington, D. G. r 

